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@ARTICLE{Kuttich:820727,
author = {Kuttich, B. and Ivanova, Oxana and Grillo, I. and Stühn,
B.},
title = {{P}olymer loaded microemulsions: {C}hangeover from finite
size effects to interfacial interactions},
journal = {The journal of chemical physics},
volume = {145},
number = {16},
issn = {1089-7690},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2016-05995},
pages = {164904 - 1-6},
year = {2016},
abstract = {Form fluctuations of microemulsion droplets are observed in
experiments using dielectric spectroscopy (DS) and neutron
spin echo spectroscopy (NSE). Previous work on dioctyl
sodium sulfosuccinate based water in oil microemulsions in
the droplet phase has shown that adding a water soluble
polymer (Polyethylene glycol M = 1500 g mol−1) modifies
these fluctuations. While for small droplet sizes (water
core radius rc < 37 Å) compared to the size of the polymer
both methods consistently showed a reduction in the bending
modulus of the surfactant shell as a result of polymer
addition, dielectric spectroscopy suggests the opposite
behaviour for large droplets. This observation is now
confirmed by NSE experiments on large droplets. Structural
changes due to polymer addition are qualitatively
independent of droplet size. Dynamical properties, however,
display a clear variation with the number of polymer chains
per droplet, leading to the observed changes in the bending
modulus. Furthermore, the contribution of structural and
dynamical properties on the changes in bending modulus
shifts in weight. With increasing droplet size, we initially
find dominating finite size effects and a changeover to a
system, where interactions between the confined polymer and
the surfactant shell dominate the bending modulus.I.
INTRODUCTION},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)J-NSE-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000387586200050},
doi = {10.1063/1.4966155},
url = {https://juser.fz-juelich.de/record/820727},
}